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The effects of heat treatment on morphologies and microstructures of Al 2024 and Al 7050 alloys, used as aircraft components, were studied by metallographic techniques. Light microscopy (LM) and quantitative image analysis were used to characterize the precipitate dispersion and morphology for these alloys. The application of the scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) combined techniques for studying these multiphase systems makes it possible to distinguish and quantity the different phases in the surface structure. X-ray diffraction also permitted a qualitative comparison of the structures before and after heat treatments.
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Praktische Metallographie/Practical Metallography, v. 38, n. 2, p. 74-87, 2001.
